Het archief bekijken van vrijdag 29 augustus 2025

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2025 Aug 29 1231 UTC

SIDC Prognose

Zonnevlammen

M-class flares expected (probability >=50%)

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
29 Aug 2025	232	007
30 Aug 2025	234	007
31 Aug 2025	234	007

Zonnevlekkengebieden en zonnevlammen

A total of 16 numbered sunspot groups were identified on the disk over the past 24 hours. Solar flaring activity was high over the past 24 hours, with 5 M-class flares identified. The largest flare was a M1.5 flare (SIDC Flare 5260) peaking on August 28 at 20:40 UTC, which was produced by SIDC Sunspot Group 621 (NOAA Active Region 4203). Solar flaring activity is expected to be moderate over the next 24 hours, with M-class flares likely.

Coronale massa uitstoten

No Earth-directed Coronal Mass Ejections (CMEs) have been observed in the last 24 hours.

Coronale gaten

A narrow equatorial negative polarity coronal hole crossed central meridian on 28 August, its associated high speed stream may be expected at the Earth on 1 September.

Zonnewind

The Earth is inside slow solar wind with speeds around 400 km/s and interplanetary magnetic fields of about 7 nT (directed towards the Sun, negative polarity). Similar conditions can be expected for the coming 24 hours.

Geomagnetisme

Geomagnetic conditions have been quiet to unsettled (Kp between 0 and 3 and K_Bel 0 and 2). Similar conditions are expected for the next 24 hours.

Proton flux niveaus

The greater than 10 MeV proton flux has been below the 10 pfu threshold. It is expected to remain at nominal levels.

Elektronenfluxen in geostationaire baan

The greater than 2 MeV electron flux as measured by GOES 18 and 19 remained below the 1000 pfu alert threshold, similar conditions expected for the next 24 hours. The 24 h electron fluence was at normal levels and is expected to remain so.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 211, gebaseerd op 17 stations.

Zon indexen voor 28 Aug 2025

Wolfgetal Catania	204
10cm zonneflux	232
AK Chambon La Forêt	013
AK Wingst	007
Geschatte Ap	008
Geschat internationaal zonnevlekkengetal	201 - Gebaseerd op 15 stations

Overzicht opvallende gebeurtenissen

Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive

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